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SysML: Electronics: When modelling ground (GND) use a Port type that has an inout FlowProperty

Icon class
icon_class
far fa-sticky-note
icon_class_computed
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Note kind
MODELLING
PATTERN
TIP
Policy level
RECOMMENDED
UML keywords
Port
SysMLv1.x keywords
FullPort
ProxyPort
FlowProperty
FlowProperty::direction
FlowDirectionKind::inout
InterfaceBlock
~InterfaceBlock
Keywords
And if you are using InterfaceBlock types for the Port, make sure you do conjugate it cleanly using ~InterfaceBlock, even when using inout. The approach is shown in this example:
Webel: SysML: Electronics: DO NOT represent a jack/socket as a dumb proxy. Imagine it can introduce some signal noise or other effect (such as buzz) to test it is a physical model.
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Related notes
[TIP] If you are using Blocks (not InterfaceBlocks) to Type your Ports just use "manual" feature-by feature direction inversion to achieve type conjugation (and you can even use a ~ tilde prefix)
[MODELLING, TIP]{RECOMMENDED} SysML: Electronics: When modelling electronics systems you should to decide and make clear (with ItemFlow and/or Stereotypes) whether you are modelling signals (information, does not care about GND) or a physical design with voltage (needs GND)
[ASSERTION] SysML: Typing a Port by an InterfaceBlock or ~InterfaceBlock does NOT imply that the Port is a ProxyPort (but ProxyPort must be typed by an InterfaceBlock or ~InterfaceBlock)
[ANTI-PATTERN, MODELLING, PATTERN, TIP]{STRONG} Webel: SysML: Electronics: DO NOT represent a jack/socket as a dumb proxy. Imagine it can introduce some signal noise or other effect (such as buzz) to test it is a physical model.
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